Air quality in Bolton
The US Air Quality Index (EPA) grades air from 0 to 500 using fine particles (PM2.5/PM10), ozone and nitrogen dioxide. 0-50 is Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, and anything higher affects everyone.
PM2.5
7.9 µg/m³
WHO guideline 15
PM10
8.1 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
10:00 PM
💨
PM2.5 7.9 µg/m³
33Good
11:00 PM
💨
PM2.5 7.4 µg/m³
31Good
12:00 AM
💨
PM2.5 6.6 µg/m³
28Good
1:00 AM
💨
PM2.5 5.6 µg/m³
23Good
2:00 AM
💨
PM2.5 4.7 µg/m³
21Good
3:00 AM
💨
PM2.5 4.3 µg/m³
21Good
4:00 AM
💨
PM2.5 4.2 µg/m³
21Good
5:00 AM
💨
PM2.5 4.4 µg/m³
21Good
6:00 AM
💨
PM2.5 4.7 µg/m³
20Good
7:00 AM
💨
PM2.5 4.9 µg/m³
20Good
8:00 AM
💨
PM2.5 5.2 µg/m³
22Good
9:00 AM
💨
PM2.5 5.1 µg/m³
21Good
Next few days
daily max · US EPA AQI
Sun
💨
Good · UV Moderate
35
Mon
💨
Good · UV Moderate
28
Tue
💨
Moderate · UV High
52
Wed
💨
Moderate · UV High
61